wxPython/src/drawlist.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        drawlist.cpp
   3 // Purpose:     Helper functions for optimized list drawing on a wxDC
   4 //
   5 // Author:      Robin Dunn,  Chris Barker
   6 //
   7 // Created:
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 2003 by Total Control Software
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13
  14 #undef DEBUG
  15 #include <Python.h>
  16 #include "wx/wxPython/wxPython.h"
  17 #include "wx/wxPython/pydrawxxx.h"
  18
  19
  20 //---------------------------------------------------------------------------
  21
  22
  23 // Called from _gdiinit so we can do the API import while the GIL is held
  24 void wxPyDrawList_SetAPIPtr()
  25 {
  26     wxPyCoreAPI_IMPORT();
  27 }
  28
  29
  30 PyObject* wxPyDrawXXXList(wxDC& dc, wxPyDrawListOp_t doDraw,
  31                           PyObject* pyCoords, PyObject* pyPens, PyObject* pyBrushes)
  32 {
  33     bool blocked = wxPyBeginBlockThreads();
  34
  35     bool      isFastSeq  = PyList_Check(pyCoords) || PyTuple_Check(pyCoords);
  36     bool      isFastPens = PyList_Check(pyPens) || PyTuple_Check(pyPens);
  37     bool      isFastBrushes = PyList_Check(pyBrushes) || PyTuple_Check(pyBrushes);
  38     int       numObjs = 0;
  39     int       numPens = 0;
  40     int       numBrushes = 0;
  41     wxPen*    pen;
  42     wxBrush*  brush;
  43     PyObject* obj;
  44     PyObject* coords;
  45     int       i = 0;
  46     PyObject* retval;
  47
  48     if (!PySequence_Check(pyCoords)) {
  49         goto err0;
  50     }
  51     if (!PySequence_Check(pyPens)) {
  52         goto err1;
  53     }
  54     if (!PySequence_Check(pyBrushes)) {
  55         goto err2;
  56     }
  57     numObjs = PySequence_Length(pyCoords);
  58     numPens = PySequence_Length(pyPens);
  59     numBrushes = PySequence_Length(pyBrushes);
  60     for (i = 0; i < numObjs; i++) {
  61         // Use a new pen?
  62         if (i < numPens) {
  63             if (isFastPens) {
  64                 obj = PySequence_Fast_GET_ITEM(pyPens, i);
  65             }
  66             else {
  67                 obj = PySequence_GetItem(pyPens, i);
  68             }
  69             if (! wxPyConvertSwigPtr(obj, (void **) &pen, wxT("wxPen"))) {
  70                 if (!isFastPens)
  71                     Py_DECREF(obj);
  72                 goto err1;
  73             }
  74
  75             dc.SetPen(*pen);
  76             if (!isFastPens)
  77                 Py_DECREF(obj);
  78         }
  79         // Use a new brush?
  80         if (i < numBrushes) {
  81             if (isFastBrushes) {
  82                 obj = PySequence_Fast_GET_ITEM(pyBrushes, i);
  83             }
  84             else {
  85                 obj = PySequence_GetItem(pyBrushes, i);
  86             }
  87             if (!wxPyConvertSwigPtr(obj, (void **) &brush, wxT("wxBrush"))) {
  88                 if (!isFastBrushes)
  89                     Py_DECREF(obj);
  90                 goto err2;
  91             }
  92
  93             dc.SetBrush(*brush);
  94             if (!isFastBrushes)
  95                 Py_DECREF(obj);
  96         }
  97
  98         // Get the Coordinates
  99         if (isFastSeq) {
 100             coords = PySequence_Fast_GET_ITEM(pyCoords, i);
 101         }
 102         else {
 103             coords = PySequence_GetItem(pyCoords, i);
 104         }
 105
 106
 107         // call the drawOp
 108         bool success = doDraw(dc, coords);
 109         if (!isFastSeq)
 110             Py_DECREF(coords);
 111
 112         if (! success) {
 113             retval = NULL;
 114             goto exit;
 115         }
 116
 117     } // end of main for loop
 118
 119     Py_INCREF(Py_None);
 120     retval = Py_None;
 121     goto exit;
 122
 123
 124  err0:
 125     PyErr_SetString(PyExc_TypeError, "Expected a sequence of coordinates");
 126     retval = NULL;
 127     goto exit;
 128
 129  err1:
 130     PyErr_SetString(PyExc_TypeError, "Expected a sequence of wxPens");
 131     retval = NULL;
 132     goto exit;
 133
 134  err2:
 135     PyErr_SetString(PyExc_TypeError, "Expected a sequence of wxBrushes");
 136     retval = NULL;
 137     goto exit;
 138
 139
 140  exit:
 141     wxPyEndBlockThreads(blocked);
 142     return retval;
 143 }
 144
 145
 146
 147 bool wxPyDrawXXXPoint(wxDC& dc, PyObject* coords)
 148 {
 149     int x, y;
 150
 151     if (! wxPy2int_seq_helper(coords, &x, &y)) {
 152         PyErr_SetString(PyExc_TypeError, "Expected a sequence of (x,y) sequences.");
 153         return False;
 154     }
 155     dc.DrawPoint(x, y);
 156     return True;
 157 }
 158
 159 bool wxPyDrawXXXLine(wxDC& dc, PyObject* coords)
 160 {
 161     int x1, y1, x2, y2;
 162
 163     if (! wxPy4int_seq_helper(coords, &x1, &y1, &x2, &y2)) {
 164         PyErr_SetString(PyExc_TypeError, "Expected a sequence of (x1,y1, x1,y2) sequences.");
 165         return False;
 166     }
 167     dc.DrawLine(x1,y1, x2,y2);
 168     return True;
 169 }
 170
 171 bool wxPyDrawXXXRectangle(wxDC& dc, PyObject* coords)
 172 {
 173     int x, y, w, h;
 174
 175     if (! wxPy4int_seq_helper(coords, &x, &y, &w, &h)) {
 176         PyErr_SetString(PyExc_TypeError, "Expected a sequence of (x,y, w,h) sequences.");
 177         return False;
 178     }
 179     dc.DrawRectangle(x, y, w, h);
 180     return True;
 181 }
 182
 183 bool wxPyDrawXXXEllipse(wxDC& dc, PyObject* coords)
 184 {
 185     int x, y, w, h;
 186
 187     if (! wxPy4int_seq_helper(coords, &x, &y, &w, &h)) {
 188         PyErr_SetString(PyExc_TypeError, "Expected a sequence of (x,y, w,h) sequences.");
 189         return False;
 190     }
 191     dc.DrawEllipse(x, y, w, h);
 192     return True;
 193 }
 194
 195
 196 bool wxPyDrawXXXPolygon(wxDC& dc, PyObject* coords)
 197 {
 198     wxPoint* points;
 199     int numPoints;
 200
 201     points = wxPoint_LIST_helper(coords, &numPoints);
 202     if (! points) {
 203         PyErr_SetString(PyExc_TypeError, "Expected a sequence of sequences of (x,y) sequences.");
 204         return False;
 205     }
 206     dc.DrawPolygon(numPoints, points);
 207     return True;
 208 }
 209
 210
 211 //---------------------------------------------------------------------------
 212
 213
 214
 215 PyObject* wxPyDrawTextList(wxDC& dc, PyObject* textList, PyObject* pyPoints, PyObject* foregroundList, PyObject* backgroundList)
 216 {
 217     bool blocked = wxPyBeginBlockThreads();
 218
 219     bool      isFastSeq  = PyList_Check(pyPoints) || PyTuple_Check(pyPoints);
 220     bool      isFastText = PyList_Check(textList) || PyTuple_Check(textList);
 221     bool      isFastForeground = PyList_Check(foregroundList) || PyTuple_Check(foregroundList);
 222     bool      isFastBackground = PyList_Check(backgroundList) || PyTuple_Check(backgroundList);
 223     int       numText = 0;
 224     int       numPoints = 0;
 225     int       numForeground = 0;
 226     int       numBackground = 0;
 227     PyObject* obj;
 228     int       x1, y1;
 229     int       i = 0;
 230     wxColor*    color;
 231     PyObject* retval;
 232     wxString  string;
 233
 234     if (!PySequence_Check(pyPoints)) {
 235         goto err0;
 236     }
 237     if (!PySequence_Check(textList)) {
 238         goto err1;
 239     }
 240     if (!PySequence_Check(foregroundList)) {
 241         goto err2;
 242     }
 243     if (!PySequence_Check(backgroundList)) {
 244         goto err3;
 245     }
 246     numPoints = PySequence_Length(pyPoints);
 247     numText = PySequence_Length(textList);
 248     numForeground = PySequence_Length(foregroundList);
 249     numBackground = PySequence_Length(backgroundList);
 250
 251     for (i = 0; i < numPoints; i++) {
 252         // Use a new string ?
 253         if (i < numText) {
 254             if ( isFastText ) {
 255                 obj = PySequence_Fast_GET_ITEM(textList, i);
 256             }
 257             else {
 258                 obj = PySequence_GetItem(textList, i);
 259             }
 260             if (! PyString_Check(obj) ) {
 261                 Py_DECREF(obj);
 262                 goto err1;
 263             }
 264             string = Py2wxString(obj);
 265             if ( !isFastText )
 266                 Py_DECREF(obj);
 267         }
 268
 269         if (i < numForeground) {
 270             // Use a new foreground ?
 271             if ( isFastForeground ) {
 272                 obj = PySequence_Fast_GET_ITEM(foregroundList, i);
 273             }
 274             else {
 275                 obj = PySequence_GetItem(foregroundList, i);
 276             }
 277             if (! wxPyConvertSwigPtr(obj, (void **) &color, wxT("wxColour"))) {
 278                 if (!isFastForeground)
 279                     Py_DECREF(obj);
 280                 goto err2;
 281             }
 282             dc.SetTextForeground(*color);
 283             if ( !isFastForeground )
 284                 Py_DECREF(obj);
 285         }
 286
 287         if (i < numBackground) {
 288             // Use a new background ?
 289             if ( isFastBackground ) {
 290                 obj = PySequence_Fast_GET_ITEM(backgroundList, i);
 291             }
 292             else {
 293                 obj = PySequence_GetItem(backgroundList, i);
 294             }
 295             if (! wxPyConvertSwigPtr(obj, (void **) &color, wxT("wxColour"))) {
 296                 if (!isFastBackground)
 297                     Py_DECREF(obj);
 298                 goto err3;
 299             }
 300             dc.SetTextBackground(*color);
 301             if ( !isFastBackground )
 302                 Py_DECREF(obj);
 303         }
 304
 305         // Get the point coordinates
 306         if (isFastSeq) {
 307             obj = PySequence_Fast_GET_ITEM(pyPoints, i);
 308         }
 309         else {
 310             obj = PySequence_GetItem(pyPoints, i);
 311         }
 312         if (! wxPy2int_seq_helper(obj, &x1, &y1)) {
 313             if (! isFastSeq)
 314                 Py_DECREF(obj);
 315             goto err0;
 316         }
 317         if (PyErr_Occurred()) {
 318             retval = NULL;
 319             if (!isFastSeq)
 320                 Py_DECREF(obj);
 321             goto exit;
 322         }
 323
 324
 325         // Now draw the text
 326         dc.DrawText(string, x1, y1);
 327
 328         if (!isFastText)
 329             Py_DECREF(obj);
 330     }
 331
 332     Py_INCREF(Py_None);
 333     retval = Py_None;
 334     goto exit;
 335
 336  err0:
 337     PyErr_SetString(PyExc_TypeError, "Expected a sequence of (x,y) sequences.");
 338     retval = NULL;
 339     goto exit;
 340  err1:
 341     PyErr_SetString(PyExc_TypeError, "Expected a sequence of strings");
 342     retval = NULL;
 343     goto exit;
 344
 345  err2:
 346     PyErr_SetString(PyExc_TypeError, "Expected a sequence of wxColours for foregrounds");
 347     retval = NULL;
 348     goto exit;
 349
 350  err3:
 351     PyErr_SetString(PyExc_TypeError, "Expected a sequence of wxColours for backgrounds");
 352     retval = NULL;
 353     goto exit;
 354
 355  exit:
 356     wxPyEndBlockThreads(blocked);
 357     return retval;
 358 }
 359
 360
 361
 362 //---------------------------------------------------------------------------